Packt Publishing

Lucene is mature, open-source, highly performing, scalable, light and, yet, very powerful. It also has a very strong community that supports it. Its core comes as a single file of Java library with no dependencies, and allows you to index documents and search them with its out-of-the-box full text search capabilities.

Each Python class definition has an implicit superclass: object.

When we define our own class, object is the superclass.